<template>
  <div>
    <!-- 头部面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 头部面包屑导航 -->
    <!-- 卡片显示区域 -->
    <el-card>
      <el-alert
        title="消息提示的文案"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- 左侧标签栏 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="handleTabsBeforeLeave"
          @tab-click="onTabsClidked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleCateChange"
                @visible-change="handleCateVisiableChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="name"
                  v-for="(name, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-success="handleSuccess"
              :on-remove="handleRemove"
              :headers="headerObj"
              list-type="picture"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="add-button" @click="onAddOKClicked"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
      <!-- 左侧标签栏 -->
    </el-card>
    <!-- 卡片显示区域 -->
    <!-- 预览对话框 -->
    <el-dialog
      title="预览图片"
      :visible.sync="previewDialogVisible"
      width="50%"
    >
      <el-image class="previewImage" :src="previewUrl" fit="fill"></el-image>
    </el-dialog>
    <!-- 预览对话框 -->
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    var checkFlaotNum = (rule, value, cb) => {
      if (value > 0) {
        return cb()
      }
      cb(new Error('数值必须大于0'))
    }

    var checkIntNum = (rule, value, cb) => {
      if (value >= 0 && value % 1 === 0) {
        return cb()
      }
      if (value < 0) {
        return cb(new Error('数值必须大于0'))
      }
      if (value % 1 !== 0) {
        return cb(new Error('数值必须是整数'))
      }
      return cb(new Error('其他错误'))
    }
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: ''
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
          { validator: checkFlaotNum, trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
          { validator: checkFlaotNum, trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
          { validator: checkIntNum, trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      catelist: [],
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      manyTableData: [],
      onlyTableData: [],
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewUrl: '',
      previewDialogVisible: false
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$msg.error(res.meta.status + res.meta.msg)
      }
      this.catelist = res.data
      // console.log(this.catelist)
    },
    handleCateVisiableChange(v) {
      if (v) {
        document.querySelector('.el-cascader-panel').style.height = '200px'
      }
    },
    handleCateChange() {},
    handleTabsBeforeLeave(_new, old) {
      if (old === '0' && this.addForm.goods_cat.length !== 3) {
        this.$msg.error('请先选择商品分类！')
        return false
      }
    },
    async onTabsClidked(e) {
      // console.log(e)
      if (e.active) {
        if (e.name === '1') {
          const { data: res } = await this.$http.get(
            `categories/${this.cateId}/attributes`,
            {
              params: { sel: 'many' }
            }
          )
          if (res.meta.status !== 200) {
            return this.$msg.error(res.meta.status + res.meta.msg)
          }
          res.data.forEach(item => {
            item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
          })

          this.manyTableData = res.data
          // console.log(this.manyTableData)
        } else if (e.name === '2') {
          const { data: res } = await this.$http.get(
            `categories/${this.cateId}/attributes`,
            {
              params: { sel: 'only' }
            }
          )
          if (res.meta.status !== 200) {
            return this.$msg.error(res.meta.status + res.meta.msg)
          }
          // res.data.forEach(item => {
          //   item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
          // })

          this.onlyTableData = res.data
          // console.log(this.onlyTableData)
        }
      }
    },
    handlePreview(file) {
      // console.log(file)
      this.previewUrl = file.response.data.url
      this.previewDialogVisible = true
    },
    handleRemove(file) {
      const tmpPath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(item => item.pic === tmpPath)
      this.addForm.pics.splice(index, 1)
      // console.log(this.addForm.pics)
    },

    handleSuccess(res) {
      // console.log('------------', res)
      const picInfo = { pic: res.data.tmp_path }
      this.addForm.pics.push(picInfo)
      // console.log(this.addForm)
    },

    onAddOKClicked() {
      // console.log(this.addForm.goods_introduce)
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          this.activeIndex = '0'
          return this.$msg.error('请检查表单')
        }
        // this.addForm.goods_cat = this.addForm.goods_cat.join(',')
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        form.attrs = []

        this.manyTableData.forEach(item => {
          const _obj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          form.attrs.push(_obj)
        })

        this.onlyTableData.forEach(item => {
          const _obj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          form.attrs.push(_obj)
        })
        console.log(form)

        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$msg.error(res.meta.status + res.meta.msg)
        }
        this.$router.push('/goods')
        this.$msg.success(res.meta.msg)
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}

.previewImage {
  width: 100%;
}

.add-button {
  margin: 15px 0 0 0;
}
</style>
